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प्रश्न
A metal oxide that is reduced by hydrogen is
विकल्प
Al2O3
CuO
CaO
Na2O
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उत्तर
CuO
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संबंधित प्रश्न
Write the chemical formula of rust.
Give one example of an oxidation-reduction reaction which is also a combination reaction.
Indicate which of the following statement is true and which is false:
The removal of hydrogen from a substance is called reduction.
Electrolysis is a redox process. Explain.
Identify from the reaction the reactants that undergo oxidation and reduction.
\[\ce{NiO + H2 -> Ni + H2O}\]
In the reaction of iron with copper sulphate solution:
CuSO4 + Fe → Cu + FeSO4
Which option in the given table correctly represents the substance oxidized and the reducing agent?
| OPTION | Substance Oxidized | Reducing Agent |
| A | Fe | Fe |
| B | Fe | FeSO4 |
| C | Cu | Fe |
| D | CuSO4 | Fe |
Identify the reducing agent in the following reactions
`2"H"_2 + "O"_2 -> 2"H"_2"O"`
During the reaction of some metals with dilute hydrochloric acid, following observations are made.
The reaction of sodium metal is found to be highly explosive
Explain this observation giving suitable reason.
Oxidizing agents are otherwise called ______.
Find the oxidation number of the element in the following compound.
Mg in MgO
